论文部分内容阅读
目的 探索图形视网膜电图(pattem eleetroretinogram PERG)和图形视觉诱发电位(pattem visnal evoked potential，P-VEP)对慢性青光眼的诊断价值。方法对67眼慢性青光眼采用P -ERG和PVEP检测，观察指标：P-ERG的b波波幅(AB50∽及其潜伏时(LB50)，PVEP的P100波幅(AP100)及其潜伏时(LP100)，定量中心视野的总灰度值。结果①AB50、LB50、AP100和LP100对慢性青光眼的阳性检出率分别为91.04％、38.06％、67.16％和76.12％。②中心视野总灰度值与AB50和AP100呈显著的负相关关系与LB50和LP100呈显著的正相关关系。结论P -ERG和PVEP可以为慢性青光眼的早期诊断提供客观的临床依据，P -ERG和P VEP与青光眼视功能的损害程度密切相关，可以对青光眼的定量诊断有一定价值。“,”Objective To explore the early diagnosis of chronic glaucoma with pattern electroretinogram (P-ERG)and pattern visual evoked potential (P-VEP). Methods 76 cases of chronic glaucoma were examined with P－ERG,P-VEP and quantitative central perimetry. The observing index were as follows: amplitude of b-waves on P-ERG(AB 50). the latency of b-waves in P-ERG (LB50), the amplitude of P100-wave in P－VEP (AP100), the latency ofP100-waves in P-VEP (LP100) and the gross gray value. Results The positive rates of AB 50, LB 50, AP100 andLP100 were 91.04%, 88. 060%00,67. 16% and 76.12% respectively. There were remarkably negative relation betweenthe gross gray value and AB 50, AP 50, while positive correlation were shown obviously between the gross gray valueand LB 50, LP100. Conclusion P－ERG and P－VEP and offer external clinic base for the early diagnosis of chronicglaucoma. The P-ERG and P-VEP are closely related with the degree of the damage of visual function in chronic glau-coma. The examination with P-ERG and P-VEP has definite value to the diagnosis of glaucoma.